Function (4)
'function' is the definition.
(something's use is its function)
This is all the clue.
(Other definitions for use that I've seen before include "Avail oneself of" , "Bring into play" , "Put to a particular purpose" , "Benefit" , "Habitually employ" .)
'function' is the definition.
(I know that function can be written as purpose)
This is all the clue.
(Other definitions for purpose that I've seen before include "End" , "Function" , "Motivation or intention" , "Resolve; reason" , "Aim, intention, design" .)
'function' is the definition.
(I know that function can be written as operate)
This is all the clue.
(Other definitions for operate that I've seen before include "Make function" , "Act in a theatre" , "Perform as surgeon does" , "Carry on business" , "Carry out surgery" .)
'function' is the definition.
(I know that function can be written as role)
This is all the clue.
(Other definitions for role that I've seen before include "Character" , "Part, portrayal" , "Part in play, film etc" , "Playing part" , "Part (in drama)" .)
'function' is the definition.
(I know that function is a more specific form of serve)
This is all the clue.
(Other definitions for work that I've seen before include "Labour" , "Tasks to be undertaken" , ". . . get on with serious business" , "Monotonous song" , "Wildly happy" .)
'function' is the definition.
(function can mean a social event)
This is all the clue.
(Other definitions for party that I've seen before include "Bash" , "See 22" , "Political organization" , "Social gathering; person" , "push the boat out" .)